Comp Sci Test Study

Question 1

What is an app’s component?

Answer 1

The visible and non-visible pieces that make an app work. They are built in.

Question 2

What is an app’s behavior?

Answer 2

The events and responses to those events.

Question 3

What are the 5 types of events in app inventor?

Answer 3

User- initiated event, Initialization event, Timer event, Animation event, and External event.

Question 4

What is a user-initiated event?

Answer 4

An event that is triggered by the user.

Question 5

What is an initialization event?

Answer 5

An event that is triggered when the app is launched.

Question 6

What is the event handler block in MIT app inventor?

Answer 6

Block that tells the app what to do in case of a specific event.

Question 7

What is a timer event?

Answer 7

An event that is triggered by a timer or time passing.

Question 8

What is an animation event?

Answer 8

An event that is triggered by things on the screen, such as sprites colliding.

Question 9

Define and provide examples for an event handler

Answer 9

This is made up of the event and the app’s response to that event. For example, when the user clicks a button, it plays a sound.

Question 10

Define a visible component.

Answer 10

These are parts of the user interface, components that the user can see.

Question 11

What is an external event?

Answer 11

An event triggered by an external device.

Question 12

Define non-visible components.

Answer 12

Components that the user cannot see.

Question 13

How does an event handler start in app inventor?

Answer 13

It begins with a “when do” block.

Question 14

What is an algorithm?

Answer 14

A sequence of precise instructions that solve a problem or perform some computation.

Question 15

What is sequence in an algorithm?

Answer 15

It is following a precise sequence (order) of actions or instructions.

Question 16

What is repetition in an algorithm?

Answer 16

It allows algorithms to be simplified by stating that certain steps will repeat until told otherwise.

Question 17

Provide examples of a visible component.

Answer 17

Buttons, boxes, labels, text, etc.

Question 18

What is selection in an algorithm?

Answer 18

An algorithm being able to go down different pathways depending on what happens (if/else).

Question 19

Provide examples of a non-visible component.

Answer 19

Accelerometer, clock, location sensor, sound, etc.

Question 20

Define a property in MIT app inventor.

Answer 20

A property is something you can change about a visible component. You can modify it in the designer view in App Inventor.

Question 21

What does SMS stand for?

Answer 21

SMS stands for short message service.

Question 22

What is an algorithm in computer programming?

Answer 22

Programs are algorithms written in a programming language to run on the computer.

Question 23

What is an IDE?

Answer 23

It allows programmers to edit source code, compile and run the code, and easy debugging.

Question 24

Define event-driven programming.

Answer 24

Event-driven programming is when the program reacts to events, mostly triggered by the user.

Question 25

What are the three types of algorithms?

Answer 25

Sequence, Repetition, and Selection

Question 26

Give examples of a property in App Inventor.

Answer 26

Height, width, or color.

Question 27

What is SMS?

Answer 27

It does not include any type of media and basically is text messaging.

Question 28

What type of event would an SMS be?

Answer 28

If sending, user-initiated, if receiving, external.

Question 29

What does IDE stand for?

Answer 29

Integrated Development Environment

Question 30

Why are IDE's important for software and application development?

Answer 30

They are important because they allow developers to create the app easily, and newer programmers to have that opportunity as well.

Question 31

How is event-driven programming different than traditional programming?

Answer 31

Different from traditional programming because it does not perform recipes in a predetermined order (do A, then do B, then do C) like traditional programming. Everything the app performs is based on what events happen.

Question 32

What is a recipe in computer programming?

Answer 32

A recipe is a sequence of actions to be performed.

Question 33

What is the viewer panel in app inventor?

Answer 33

Inside design view, shows what the final app will look like to users when they open it.

Question 34

What is a function?

Answer 34

Something that does something to or with a component

Question 35

What is the User Interface?

Answer 35

Generally the visual components of the app, but is the part of the app that the user can interact with.

Question 36

What is blockly programming?

Answer 36

Programming that represents code as interlocking blocks; each block contains pieces of code. The programmer doesn't need to worry about syntax.

Question 37

What is the palette panel?

Answer 37

Where you can find the different visible and non-visible components/elements of an app and are grouped by functionality.

Question 38

What does it mean to call a function?

Answer 38

Carrying out or making a function happen.

Question 39

What does it mean to invoke a function?

Answer 39

Carrying out or making a function happen.

Question 40

What is the components panel?

Answer 40

This is a list of the components you’ve chosen and renamed from the palette panel.

Question 41

What is the workspace in app inventor?

Answer 41

The part where you drag blocks into and construct it.

Question 42

What is the media panel?

Answer 42

Where you can find images, videos, and audio, or upload it. This is the only panel that is found on both designer and block views.

Question 43

What is blocks editor view in app inventor?

Answer 43

Where you drag the blocks into the workspace to program the app. Used to determine what the behaviors of the app will be.

Question 44

What is the designer view in app inventor?

Answer 44

Where you add and organize your components on the screen.

Question 45

What is a callback function?

Answer 45

A type of function in a program that, once defined, can be called at any point in the program simply by name, instead of repeating all the code.